Gas and air mixing device



A ril 13, 1937. w A, HAUER 2,076,559

GAS AND AIR MIXING DEVICE Filed Dec. 15, 1935 ENG/N6 MIN/F0460M'ZZz'amA.Hczae;'

INVENTOR ATTORNEY 1 5 1y economize in the use of Patented Apr. 13, 1937UNITED STATES PATENT OFFICE.

GAS AND AIR.

MIXING DEVICE 2 Claims.

This invention relates to gas and air mixing devices for internalcombustion motors.

When a vehicle motor is suddenly accelerated, for example, starting froma stop, or passing another vehicle, the sudden acceleration of the motorreduces the vacuum pull in the intake manifold. The present inventionprovides apparatus for utilizing this decrease in the vacuum to shut offa predetermined amount of air so -11) that a richer mixture may besupplied to the motor until the motor has picked up speed to restorevacuum in the intake manifold. Thus a stronger charge is supplied to themotor to increase the power of the motor and simultaneousfuel at allspeeds above idling speed.

A further object of the invention is to provide a gas and air mixingdevice having a manually adjustable sleeve valve for controlling the airintake.

A further object is to provide a device of this character which willoperate with the accelerator and throttle rods and the intake manifoldsof all standard motors.

With the above and other objects in view the invention consists ofcertain novel details of construction and combinations of partshereinafter fully described and claimed, it being understood thatvarious modifications may be resorted to within the scope of theappended claims without departing from the spirit or sacrificing any ofthe advantages of the invention.

In the accompanying drawing forming part of this specification,

Figure 1 is a longitudinal sectional view through a gas and air mixingdevice constructed in accordance with the invention.

Figure 2 is a plan view of the parts shown in Figure 1.

Figure 3 is a cross sectional view taken on the line 3-3 of Figure 1.

Figure 4 is a cross sectional view taken on the line 4-4 of Figure 1.

Figure 5 is a detail cross sectional view taken on the line 5-5 ofFigure 1 with the valve closed.

Referring now to the drawing in which like characters of referencedesignate similar parts in the various views, I designates a cylinderwhich is open at one end to receive a cylindrical hollow piston I I. Apin I2 is secured in the open end of the piston and a end, as shown atM, and screwed into a threaded opening l formed in the pin. The rod isprovided with a laterally directed free end "5 which is orificed, asshown at H, to receive any suitable rod I3 is threaded at one connectorfor attaching the rod to the accelerator rod of the motor.

The cylinder l 0 is closed at one end by a flanged cap l8 having anipple IS. A T-coupling has one leg threaded onto the nipple I9. Theshank 1 2| of the coupling is adapted to be threaded into a suitableopening in the intake manifold 22- of the motor. Thus the cylinder I0may be subjectedto fluctuations in the suction or vacuum as it istermed, in the motor.

A valve housing 23 is disposed in the closed end of the cylinder andextends exteriorly of the cylinder. A plunger valve 24 is slidablyfitted in the housing 23 and is adapted to seal and unseal ports y 25formed at diametrically opposite points in the housing within thecylinder, 1 0.

Disposed on the exterior of the cylinder l0 near the open end thereof isa housing 26 within which is telescopically mounted a hollow piston 21.A spring 28 is confined within the piston and bears upon the cylinderIn.

A walking beam 29 is pivoted, as shown at 30, upon an arm 3| formedintegral with the plunger valve housing 23. One end of the walking beamis pivotally connected to the piston 21 as shown at 32. The other end ofthe walking beam is pivotally connected to the plunger valve 24 by meansof a link 33 which is pivotally connected at its ends to the walkingbeam and to the plunger valve as shown at 34 and 35.

A pipe 3'6 is connected at one end to the T- coupling 20 and at theother end is connected to a short pipe 37 which is integral with thepiston housing 26.

The cylinder I0 is provided with a plurality of rows of air intakeopenings 38 and supply of air to the interior of the cylinder throughthese openings is controlled by means of a split sleeve 39 whichsurrounds the exterior of the cylinder between the housings 23 and 26.

In operation, when the motor starts it creates a vacuum in the manifold22 which is exerted through the pipe 36 upon the piston 21 to move thepiston against the tension of its spring 28 and through theinstrumentality of the walking beam 29, moves the plunger valve 24 touncover the ports 25. Now, as the throttle is opened on the carbureterthe piston H will uncover the openings 38 progressively to permit air toenter and pass through the ports 25 into the manifold 22.

Now, should the motor be suddenly accelerated, as for instance when itis desired to pass another car, the sudden acceleration of the motorreduces the vacuum in the intake manifold and this weak 66 vacuum, beinginsuificient to overcome the spring 28, the latter instantly moves thepiston 21 and through the instrumentality of the walking beam 29 closesthe plunger valve 24 to seal the ports 25.

Consequently, regardless -of the position of the piston H in thecylinder ID no air can pass from the cylinder through the ports 25 intothe intake manifold. Thus a richer mixture is available to conform tothe requirements of the motor due to sudden acceleration. When the motorpicks up its load and starts normally again the vacuum is restored inthe intake manifold 22 with resultant removal of the plunger valve 24 tounseal the ports 25 and permit air to again enter the intake manifold.

By swiveling the sleeve 39 on the cylinder 10. one or more rows of theopenings 38 may be sealed or uncovered to adapt the device to variousconditions of service.

the construction and operation of the invention will be fully understoodwithout further explanation.

What is claimed is:

1. The combination with a motor intake manifold and throttle rod, of acylinder operatively connected'to the manifold to be exposed tofluctuations of vacuum therein, a piston in the cylinder operativelyconnected to the throttle rod to be moved as a unit therewith, therebeing intake openings in the cylinder exposed by the piston when thethrottle rod is moved to accelerate the motor, a valve in the cylinderadapted to establish and cut off communication between the cylinder andthe manifold, a spring pressed piston on the cylinder operativelyconnected to the valve From the above description it is thought that tomove as a unit therewith, means exposing the spring pressed piston tofluctations of vacuum in the manifold, the spring pressed piston beingcontrolled by decreased vacuum in the manifold and closing the valve inthe cylinder to prevent air from the cylinder entering the manifold whenthe motor is suddenly accelerated, and a revoluble sleeve valve on thecylinder having a longitudinal split therein for selectively exposingthe openings in the cylinder.

2. The combination with a motor intake manifold and throttle rod, of acylinder operatively connected to the manifold tobe exposed tofluctuations of vacuum therein, a piston in the cylinder operativelyconnected to the throttle rod to be moved as a unittherewith, a valve inthe cylinder adapted to establish and cut off communication between thecylinder and the manifold, a housing for the valve projecting exteriorlyof the cylinder, a housing on the exterior of the cylinder operativelyconnected to the manifold to be exposed to fluctuations of vacuumtherein, a spring pressed piston assembled with the second namedhousing, a walking beam connecting the spring pressed pistonwith saidvalve whereby the valve is moved by the piston to closed position to cutoff communication between the cylinder and the manifold duringdiminished vacuum in the manifold and to establish communication betweenthe manifold and the cylinder when normal vacuum is restored, therebeing air intake openings in the cylinder controlled by the piston inthe cylinder, and a sleeve valve on the cylinder betweeen both housingscontrolling the openings.

WILLIAM A. HAUER.

